The molar mass of arsenic (As) is approximately 74.92 grams per mole (g/mol).
To understand this value, we can refer to the periodic table where arsenic is listed with an atomic number of 33. The molar mass reflects the mass of one mole of arsenic atoms, which means if you have a quantity of arsenic that weighs 74.92 grams, it contains Avogadro’s number (approximately 6.022 x 1023) of arsenic atoms.
Calculating molar mass involves summing the atomic masses of all the atoms in a molecule, but since arsenic is a pure element, its molar mass is simply its atomic mass, which is derived from the weighted average of the isotopes of arsenic found in nature.